0M9N0ZZ
Drainage Knee Bursa and Ligament, Right to No Qualifier with No Device, Open Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | M Bursae and Ligaments |
| Operation | 9 Drainage |
| Body Part | N Knee Bursa and Ligament, Right |
| Approach | 0 Open |
| Device | Z No Device |
| Qualifier | Z No Qualifier |
Operation Definition
Taking or letting out fluids and/or gases from a body part
Procedure Overview
Drainage procedures remove fluid or gas that has accumulated within a bursa, most often as a result of inflammation, infection, or trauma. Bursae are small fluid-filled sacs that cushion joints, and when they become irritated or infected they can swell painfully with excess fluid, a condition commonly known as bursitis. Draining the fluid relieves pressure and pain, and in infected cases removes purulent material that antibiotics alone cannot clear.
This can be done with a needle and syringe for straightforward aspiration of a swollen bursa, such as the olecranon bursa at the elbow or the prepatellar bursa at the knee, or through a small incision when the fluid is thicker or infection requires more thorough evacuation.
Drainage is typically a first-line treatment for symptomatic bursitis and is often paired with fluid analysis to identify infection, crystal disease, or bleeding as the underlying cause.
Anatomy & Axis Detail
Knee Bursa and Ligament, Right
The knee contains numerous named bursae, such as the prepatellar, infrapatellar, and pes anserine bursae, along with the collateral and cruciate ligamentous structures that stabilize the joint; on the right knee, drainage most commonly addresses prepatellar bursitis from repetitive kneeling, septic bursitis, or a postoperative hematoma. Because several bursae sit at different depths relative to the joint capsule, precise identification of which bursa is involved matters both clinically and for documentation, since superficial prepatellar collections are managed quite differently from deeper collections near the joint line. Infected bursal fluid can mimic septic arthritis, so clinicians often drain and send fluid for analysis to distinguish bursal infection from true intra-articular sepsis before proceeding with further treatment.
Approach: Open
Open approach means the surgeon cuts through skin, mucous membrane, or other tissue layers to physically expose the target site to view before performing the procedure. It gives direct visualization and hands-on access, distinguishing it from Percutaneous approaches where instruments pass through a small puncture without exposing the site. Open is typical for procedures needing wide access, such as most laparotomies.
Coding & Documentation
The operative or procedure note should describe fluid, pus, or blood being taken out of a bursa, with language such as aspiration, needle drainage, or incision and drainage. Coders need to confirm the target is a bursa rather than a joint space, since joint aspiration is coded to a different body system.
A common assignment error is failing to distinguish diagnostic aspiration from therapeutic drainage when both occur in the same encounter, or missing that a device such as a drain was left in place, which affects the approach and device value. Documentation should also specify whether the procedure was open or percutaneous, since this changes the approach character.